Question

late:
3. PLAYING WITH NUMBERS
23. Which is the smallest and the greatest digit that s
the blank, to make the number divisible by 3?
(1) 2341
(2) 5234
(3)9_432 (4) 84_5
24. Which digit should be written in place of x,
divisible by 11 ?
(1) 258 x 6 (2) 708 x 8 (3) 9280 x (4) x
6
(2) 708
8
(3) 9280
(1) 258
ACTIVITIES​

Answer 1

Answer:

Divisibility Test for 3: if the sum of the digits of a number is divisible by 3, then the number is divisible by 3. We can test for divisibility by 3 (see table above) to quickly find a factor of 621 other than 1 and itself. The sum of the digits of 621 is 6+2+1 = 9.

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